By creating skills on your business units, you can make them required for your types of activities.
The planning assistant will then only suggest field workers with suitable skills.
The equipment works as a skill, but no need for level: the field worker has it or not!
The skills of your field workers are to be defined on each field worker sheet.
To restrict available field workers
If the field worker does not have the required level indicated on the type of activity, it is not offered
By indicating the need for the field worker to hold equipment, you will not be mistaken
Skills can be used to prioritize field workers during planning
You can prioritize your teams over subcontractors
It would be a shame to involve an over-qualified person