To deduct your tax from an order you need to submit your cleverbridge document ID to the relevant field when placing your order. If you do not yet have a cleverbridge tax ID, you may contact cleverbridge to obtain one. Make sure to include your tax exemption certificate with your request. You may also check the following FAQ page for further info, and below are some articles that could be helpful: 

I am with a tax-exempt organization and would like to place an order without being charged sales tax. What steps should I follow?  

How do I place an order in the name of a company that is registered with a VAT ID within the EU?