Can use 2,4GHz and 5GHz simultaneously?

RouterOS Beginner Basics
1

Hello, I’m new in Mikrotik family
I have Routerboard Mikrotik RB952Ui-5ac2nD. Can I use 2,4GHz and 5GHz simultaneously? I have two wlan interfaces wlan1 for 2.4GHz and wlan2 for 5GHz. I can use only one wlan in same time. If I use 2,4GHz wlan 2 is slave.
Is posible use both simultaneously?

2

Your questions is not clear.

Yes, you have two independent wlan interfaces, you can connect 2GHz clients to one, and 5GHz clients to the other.
How do you mean “use simultaneously”?