Add links to Zendesk/Django Admin for onboarding/offboarding docs (#4261

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* Add links to Zendesk/Django Admin for onboarding/offboarding

* Misplaced links for offboarding.md

.github/ISSUE_TEMPLATE/offboarding.md

@@ -16,7 +16,8 @@ assignees: ''
 - [ ] Remove from the private channels #oros-fac-private and #fac-helpdesk in Slack (“/remove @[person]”)
 - [ ] Remove from active Figma projects
 - [ ] Remove from Mural
-- [ ] Remove from Zendesk 
+- [ ] Remove from Zendesk [here](https://fac-gov.zendesk.com/admin/people/team/members).
+- [ ] Remove from the list of staff users in the Django Admin app [here](https://app.fac.gov/admin/users/staffuser/).
 - [ ] Check for and remove admin access in the FAC application: this may include designated permissions and/or checked-in API  access ([for example](https://github.com/GSA-TTS/FAC/blob/fb0e7bdf1cb1807291e6b6eef068e97b4574078c/backend/support/api/admin_api_v1_1_0/create_access_tables.sql#L21))
 
 ## For GitHub contributors

.github/ISSUE_TEMPLATE/onboarding.md

@@ -86,3 +86,7 @@ Note: If you're not able to do any of these yourself, you're still responsible f
 - [ ] Make them Owner of [the various Google Groups in the project README](https://docs.google.com/document/d/1g8nYqYS_ifFlZB-DBgfeSoJRMB__EqWsmLnacyk-bDI/edit#heading=h.81zynabayrrg)
 - [ ] Add them to [the FAC-admins team in GitHub](https://github.com/orgs/GSA-TTS/teams/fac-admins/members) and make them a Maintainer.
 - [ ] Also give them the `Maintainer` role in [the FAC-team team in GitHub](https://github.com/orgs/GSA-TTS/teams/fac-team/members).
+
+**For helpdesk, also...**
+- [ ] Add them to the list of staff users for [Django Admin](https://app.fac.gov/admin/users/staffuser/).
+- [ ] Give them access to the [Help Desk](https://fac-gov.zendesk.com/admin/people/team/members) as a team member.