HI i wanted to know how to put multiple conditions with a single formula on ERPNEXT version 12.

Example:

Component 1: if base is greater than or equal to 5,000 but less than or equal to 10,000 then base * 0.01

Component 2 if base is greater or equal to than 10,001 but less than or equal to 15,0000 then base * 0.02

How can i express these condition on the salary structure? Kindly assist.