You don't have limitation adding Targets, to add a new target you can open the Menu Target/New Target.
Here we can fill all about the target, like the Target Name, the Root Domain, Bug Bounty Program URL with the description of the program, like https://hackerone.com/shopify and more.
The only required fields are the Target Name and the Root Domain, the other fields are optional.
Target Name example: Yahoo, GitLab, Shopify
Root Doamin example: yahoo.com, gitlab.com, shopify.com
After you add the Target you can navigate to the Target either using the Target Menu or the list of Targets in the Home page.
Each Target contains the tags Subdomains, Agents, Notes, General and Setting.
Agents Tag contains the list of Agents added and there you can run the Agents, see the Terminal, the Logs, and Stop the Agent running. To know more about the Agents check this link.
Notes tag allows you to add notes about the Target. To know more about the Notes check this link.
General Tag contains multiples entries about Target like the number of subdomains, the number of Agents, etc. We are going to continue adding different metrics there.
Setting Tag you can edit the Target and remove it with all the subdomains and services below to that Target.