Managing Portal Users, Project Users and Client Users in Zoho Projects is largely a manual, checklist-driven job: someone has to notice a new starter needs access, invite them, set their project profile correctly, and later remember to deactivate them when a client engagement ends. This is exactly the kind of repetitive, rules-based work that an AI agent approach is well suited to, though it is worth being clear about what that means in practice today rather than treating it as already solved.
User administration in Zoho Projects tends to fall into a predictable pattern: someone is added when a project kicks off, their permissions occasionally need adjusting mid-project, and they should be deactivated once their involvement ends. The risk is rarely the individual step, it is that the trigger for that step (a project closing, a client contract ending, a team member moving on) lives in someone's memory or in a different system entirely, so the Zoho Projects side of it lags behind reality.
Rather than a person having to remember and act on each trigger, an agent-style approach watches for the trigger event and carries out the multi-step response itself: detect that a project has been marked complete, work out which client and project users were scoped only to that project, deactivate them, and log what was done for audit purposes. The value is not any single step, which is simple on its own, but reliably chaining detection through to action without a person in the loop for routine cases.
Zoho's Zia Agents are documented and actively used for automating multi-step workflows in applications such as Zoho CRM and Zoho Desk. I am not certain that a native Zia Agent building block is currently available specifically for Zoho Projects user administration, and rather than assume it is, the practical route today is usually a scheduled Deluge function that runs against the Zoho Projects API: checking project status, cross-referencing user assignments, and applying the deactivation and notification logic on a routine schedule. It achieves the same outcome as an agent-style workflow, built with the automation tools that are confirmed to be available for this application.
Zoho has been extending Zia Agents into more applications across the suite over time, so it is plausible that more native, agent-style automation for Zoho Projects administration becomes available in future. This is a reasonable direction rather than a confirmed roadmap item, so build your automation on the tools available today and revisit the native options periodically rather than waiting for them.