Impact of changing VDOM switch management

Hi All, 

I'm pretty new to Fortigate's and i'm troubleshooting an issue. 

The Fortigate has a VDOM named 'Client', and i am unable to access TACACS, updates, etc.. from the Client VDOM. 

I have done a little research and it appears that i within the Global VDOM, i need to change the Switch Management from root to Client. 

What is the impact of making this change. Is there a risk that i could lose https access to the management interface of the Firewall? 

Thanks

K