Hi Sigli,
Totally understand why you may want to combine these indicators to simplify the analysis, a recommendation is to measure the two separately.
The reason is simple. Adherence measures the punctuality of agents. It assesses compliance with the schedule throughout the day. In contrast, conformance refers to productive hours worked by the agent for an entire day. An employee could be conforming without adhering. For example, an agent arrives 20 minutes late for work. This agent is not adhering to his or her schedule. However, the same agent also remains at work 20 minutes later than scheduled. The agent is therefore respecting the total number of hours planned.
Don't forget also as you are a member of the WEM Community this would have been an ideal question to ask there :-)
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