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diff --git a/docs.it4i/opencode.md b/docs.it4i/opencode.md
new file mode 100644
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+++ b/docs.it4i/opencode.md
@@ -0,0 +1,37 @@
+# Opencode
+
+[Opencode][b] is a GitLab-based page for projects on which IT4Innovations participates.
+
+## Who Can Access Opencode
+
+IT4Innovations account is not required, it is possible to access through [B2ACCESS][a].
+
+## Sign in Through B2ACCESS
+
+First, we need to verify your identity:
+
+1. Sign in with your organization B2ACCESS; the page requests a valid personal certificate (e.g. GEANT).
+   Accounts with "Low" level of assurance are not granted access to IT4I zone.
+
+2. Confirm your certificate in the browser:
+
+    ![](img/B2ACCESS_chrome_eng.jpg)
+
+3. Confirm your certificate in the OS (Windows):
+
+    ![](img/crypto_v2.jpg)
+
+4. Sign to EUDAT/B2ACCESS:
+
+    ![](img/b2access-univerzity.jpg)
+
+    - If you aren't affiliated with any university, try log in with Social account. If you aren't able to sign in through an IDP, It might be a result of an internal policy of your employer.
+
+    - If you don't have, or refuse to use, any of the above-mentioned accounts, you can create an account in B2ACCESS.
+
+   ![](img/b2access-no_account.jpg)
+   ![](img/b2access-select.jpg)
+   ![](img/b2access-fill)
+
+[a]: https://b2access.eudat.eu/
+[b]: https://opencode.it4i.eu
diff --git a/mkdocs.yml b/mkdocs.yml
index d80c155963236bb04b2634134b163eb9c26d2c52..6eb1cb6fdf6daf9bc4d8113d1ad6b32714b1ea6d 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -87,6 +87,7 @@ nav:
       - Parallel Computing and MPI: general/karolina-mpi.md
       - Vnode Allocation: general/vnode-allocation.md
       - Migrating from SLURM: general/slurmtopbs.md
+    - Other Services: general/opencode.md  
     - Technical Information:
       - SSH Keys:
         - OpenSSH Keys (UNIX): general/accessing-the-clusters/shell-access-and-data-transfer/ssh-keys.md