Solved! In marshmallow that 3 dots are not available what can i do

Marshmallow is Android 6.0 therefore it should have that facility. The only explanation is either your phone's manufacturer or your Service Provider has rigged the system to prevent you from doing that.

Who made it and who do you pay for your service?
 


 
I'm not near an Android 6/0 device right now but I'll get back to you later. Hopefully someone else will come in better equiped than I am at this time on a Saturday morning. 🙁
 
If memory serves, that device doesn't allow for changing the SD card to "Internal" storage.
 
Solution