Adding graphs to login credentials

docs.it4i/general/obtaining-login-credentials/obtaining-login-credentials.md

@@ -15,6 +15,94 @@ Head of Supercomputing Services acts as a PI of a project DD-13-5. Joining this
 
 The PI is authorized to use the clusters by the allocation decision issued by the Allocation Committee. The PI will be informed by IT4I about the Allocation Committee decision.
 
+## Process Flow Chart
+
+This chart describes the process of obtaining login credentials on the clusters. You may skip the tasks, that you have already done. Some of the tasks, marked with asterisk (*), are clickable and will take you to more detailed description.
+
+* I am collaborator on a project and want to obtain login credetials
+
+<div class="mermaid">
+graph TB
+id10(I am collaborator on a project and want to obtain login credetials)
+id20[Obtain certificate for digital signature]
+id10-->id20
+id30[EduID organizations from CESNET*]
+click id30 "#certificates-for-digital-signatures"
+id40[Personal certificate from PostSignum or I.CA]
+id50[Free certificate from Comodo*]
+click id50 "#alternative-way-to-personal-certificate"
+id55[Other trusted certificate]
+subgraph ""
+id20-->id30
+id20-->id40
+id20-->id50
+id20-->id55
+end
+id60[Export and save certificate to a file]
+id30-->id60
+id40-->id60
+id50-->id60
+id55-->id60
+id70[Import certificate into your email client*]
+click id70 "#installation-of-the-certificate-into-your-mail-client"
+id60-->id70
+id80[Send email with request for access to IT4I Support*]
+click id80 "#login-credentials"
+id70-->id80
+</div>
+
+* I am Primary Investigator and I want to allow my collaborators to access my project
+
+<div class="mermaid">
+graph TB
+id110(I am Primary Investigator and I want to allow my collaborators to access my project)
+id120[Obtain certificate for digital signature]
+id110-->id120
+id130[EduID organizations from CESNET*]
+click id130 "#certificates-for-digital-signatures"
+id140[Personal certificate from PostSignum or I.CA]
+id150[Free certificate from Comodo*]
+click id150 "#alternative-way-to-personal-certificate"
+id155[Other trusted certificate]
+subgraph ""
+id120-->id130
+id120-->id140
+id120-->id150
+id120-->id155
+end
+id160[Export and save certificate to a file]
+id130-->id160
+id140-->id160
+id150-->id160
+id155-->id160
+id170[Import certificate into your email client*]
+click id170 "#installation-of-the-certificate-into-your-mail-client"
+id160-->id170
+id180[Send email with request for authorization to IT4I Support*]
+click id180 "#authorization-by-e-mail-an-alternative-approach"
+id170-->id180
+</div>
+
+* I am an existing User / Primary Investigator and I want to manage my Projects / Users
+
+<div class="mermaid">
+graph TB
+id210(I am an existing User / Primary Investigator and I want to manage my Projects / Users)
+id220[Log in to extranet.it4i.cz]
+id230[Go to Projects section]
+id210-->id220
+id220-->id230
+id240[Submit request to become project member]
+id245[Wait for approval from Primary Investigator]
+id230-->|User|id240
+id240-->id245
+id250[Wait for user to submit the request to become project member]
+id255[Approve or deny user requests for becoming project members]
+id230-->|Primary Investigator|id250
+id250-->id255
+id240-.->id255
+</div>
+
 ## Login Credentials
 
 Once authorized by PI, every person (PI or Collaborator) wishing to access the clusters, should contact the [IT4I support](https://support.it4i.cz/rt/) (E-mail: [support\[at\]it4i.cz](mailto:support@it4i.cz)) providing following information: