1. Use note delay commands:
EDx (MOD, XM)
SDx (S3M, IT, MPTM)
2. Use retrigger commands:
E9x (MOD)
E9x or Rxy (XM)
Qxx (S3M, IT, MPTM)
3. Divide the default module speed, or use the speed commands:
Fxx, value < 20h (MOD, XM)
Axx (S3M, IT)
4. Multiply the default module tempo, or use the tempo commands:
Fxx, value ≥ 20h (MOD, XM)
Txx, value ≥ 20h (S3M, IT)
5. Multiply the Rows Per Beat (MPTM).