How to configure Tacacs+ on Fortigate

[slicerpro]

We have a few fortigates that we are trying to integrate into an existing Cisco ACS server with Tacacs+ authentication. Currently, we only use local user database and we want to keep that even after adding Tacacs+. The devices have all versions between 5.2 and 6.0. Please refer me to any pointers or documents that I can take a look at.

[slicerpro]

This doc helped me accomplish this on the 5.2.11 devices: https://kb.fortinet.com/k....do?externalID=FD33320 I hope it will help someone.

[slicerpro]

When i get to higher version, I found this guide that I will use:

https://kb.fortinet.com/k....do?externalID=FD41679

[slicerpro]

I have a new challenge that I can't seem to find explicit guides for. I need to configure two separate user/admin groups to use tacacs for different access levels. And in addition to the firewalls, I have a fortiADC that I need to configure similarly.