Mikrotik Tutorial 22 - Configuring a HOTSPOT with a RADIUS Server (2019) shows how to set up a hotspot using a Radius server for client authentication. It also shows how to access Mikrotik's user manager web interface, how to create a radius client router, how to create a user profile, how to create users, and many more.
This tutorial is applicable on the following Mikrotik versions:
Mikrotik RouterBoard RB951Ui-2nD hAP Mikrotik RB3011UIAS-RM Mikrotik Routerboard RB2011UiAS-2HnD-IN Mikrotik RB750Gr2 Mikrotik hEX RB750Gr3 MikroTik RB2011iLS-IN MikroTik Cloud Router CRS109-8G-1S-2HnD-IN hAP hdp hAP ac lite tower hp ac mAP lite mAP wAP RB951Ui-2HnD RB951G-2HnD RB2011UiAS-2HnD-IN Mikrotik RB941-2nD-TC