So, the first answer is “Don’t bother trying.” You will be swimming against the current, expending great quantities of time and energy trying to make work something that is probably not going to work.
You’ll find yourself and your inside sales people becoming increasingly frustrated.
Instead, hire someone who can be totally dedicated to proactive work. Keep their job description pure: no reactive stuff, only proactive calls. There is a rule here: When a person has responsibility for both reactive and proactive calls, the reactive will always swell disproportionately, crowding out the proactive.
Now, it may be that the
circumstances of your situation will not allow you to hire a new person and create a new position. If that is the case, then you need to consider my second answer.
Second: How do you get inside sales to be proactive? If you must, you follow these guidelines:
1. Make the task extremely specific. It is not, “Proactively call ten people and see if they need anything.” Instead, the task should be, “From 3 PM to 4PM
every Tuesday, call the ten people on the list I give you, and make this 50-word presentation which I have written out, word for word, for you.