diff --git a/docs/data/sensitive-data/sd-secondaryuse-billing-units.md b/docs/data/sensitive-data/sd-secondaryuse-billing-units.md
new file mode 120000
index 0000000000..c414d51dd7
--- /dev/null
+++ b/docs/data/sensitive-data/sd-secondaryuse-billing-units.md
@@ -0,0 +1 @@
+sd-billing-units.md
\ No newline at end of file
diff --git a/mkdocs.yml b/mkdocs.yml
index 74e7e1be34..62b0171ef6 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -589,6 +589,7 @@ nav:
               - data/sensitive-data/secondarydata-access.md
               - Access with Findata permit: data/sensitive-data/findata-permit.md
               - Access with register permit: data/sensitive-data/single-register-permit.md
+              - Resource planning for your CSC Project: data/sensitive-data/sd-secondaryuse-billing-units.md
           - Analyse with SD Desktop for secondary use:
               - data/sensitive-data/sd-desktop-audited.md
               - Login to SD Desktop: data/sensitive-data/sd-desktop-secondary-login.md