Thanks for contacting Ruckus. Yes, you can manage the APs which are in a branch office and the WLC in the Head Office.
You can follow the below steps to connect your remote APs to the WLC:
We do not have any documentation for configuration on Mikrotik Router hence this needs to be addressed by Mikrotik support team as this is general configuration on the vendor device. Additionally you can configure below parameter on AP side "DHCP server" that will save you the time from manually assigning ZD's IP on each AP's.
Although ZDs will sometimes work for scenarios like yours, the controller is not designed for managing remote APs and the results are usually hit and miss. The latency of the connection to the remote office will govern success or failure. Unless latency is consistently sub 50ms, you will encounter heartbeat lost warnings and AP disconnects. Ruckus Cloud, SmartZone, and Unleashed Multi-site manager are designed to handle remote offices connected via the internet and would be much more reliable choices.