Writing it down will help you think through all the details and implications. Agree on contingencies, monitoring, and evaluation. Conditions may change. Make contingency agreements about foreseeable future circumstances. Create opportunities to evaluate the agreements and their implementation.
Tips Firstly analyse the problem.
When you have identified the problem, think of how you can deal with it. Define the problem. Think of how you can deal with the opposite party and settle the problem amicably. It also will ensure a healthy working relationship till the next conflict, of course. Speak to the other person calmly, politely and rationally.