Use manual dial to use a Talk Group
In most DMR radios with keypads, there would be an option to dial Talk Group and work on a repeater or hotspot. Thid avoids the need for updating codeplug. The channel should have Receive Talk Group List (that contains the dialed TG) assigned or Digi Monitor (Promiscuous mode) enabled. The later is easier when working newly discovered TGs.
Anytone Setting
In Anytone DMR radios (Hand held or Mobile) use this option in code plug. In Optional Settings, under Digital Func, select the hold time interval to Infinite.
Alinco Setting
In Alinco DMR radios (Hand held or Mobile) use this option in code plug. In Optional Settings, under Digital Func, select the hold time interval to 30 min (max available).