SoA - controls

When only a task is defined as the implementation method of control it means that this control does not require specific documentation, so you do not need to develop your own policy or procedure.  

In cases like this, you only need to provide a record showing that the task was performed. For example, for control A.6.1.2 you only need to provide a list of which activities were divided. For control A.6.1.3 you need to provide a list of which authorities need to be contacted.

For further information, see:

• Segregation of duties in your ISMS according to ISO 27001 A.6.1.2 https://advisera.com/27001academy/blog/2016/11/21/segregation-of-duties-in-your-isms-according-to-iso-27001-a-6-1-2/
• Records management in ISO 27001 and ISO 22301 https://advisera.com/27001academy/blog/2014/11/24/records-management-in-iso-27001-and-iso-22301/