My computer my rules. If you want to install something provide me with a company computer and phone. Simple as that.

Apart from that: Having two computer and two phones isn't all that unusual.

So if push comes to shove and you can't go un unpaid leave buy a cheap 2ⁿᵈ computer and 2ⁿᵈ phone. Or ask a friend for an old spare computer and phone.

Under no circumstances put the software on your main computer.