hi, can anybody help, how do so: if i use ring 71149 (on slot 16) and when i will use 71148 i need what can`t be use this 2x ring*at the same time, ex: when i click use 71148 and click 71149 for use - 71149 don`t will use(on slot, cuz 71148 on) and*conversely,*how do it?