Ditto Richard's comments. Provide a product, and provide alternatives if they want to switch. You can go through a demo, but the hoops of demonstrable consent won't apply when this isn't a consumer. Just don't get those mixed up.
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AndyZ CRCM
My opinions are not necessarily my employers.
R+R-R=R+R
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell