Mlag command in winbox

RouterOS General
1

hi, I have three CRS326 with 7.9.2.
I configure MClag without any problem following this: https://help.mikrotik.com/docs/display/ROS/Multi-chassis+Link+Aggregation+Group

I am trying to do that only with WinBox (without using the terminal).
all is ok until last command when Imust to set the peer-port. Any knows if I can do this in any window of WinBox?

/interface bridge mlag
set bridge=bridge1 peer-port=sfp-sfpplus1

My WinBox is v3.38

thanks in advance