This is one paragraph in an interoffice memo. Should it be a semicolon instead of two separate sentences? Also, it is an interoffice memo, should company be capitalized? Thanks!

Ed, I have made several changes to our staff to help accommodate the additional shifts our company established to keep up with production. I wanted to keep you informed of the changes I have made.

Definitely a period and a separate sentence is needed. No, company should not be capitalized.

In this case, using a semicolon instead of two separate sentences would be appropriate to create a stronger connection between the two ideas. The revised paragraph would then read: "Ed, I have made several changes to our staff to help accommodate the additional shifts our company established to keep up with production; I wanted to keep you informed of the changes I have made."

As for the second question, whether or not to capitalize "company" depends on how it is being used. If it is being used as a proper noun to refer to a specific company (e.g., "our company" meaning the name of the organization you work for), then it should be capitalized. However, if it is being used as a common noun to refer to any company in general, then it should not be capitalized. Based on the context of your sentence, it seems that "company" is being used as a common noun, so it should not be capitalized.