2. Don't create gender specific dress codes, maintain professional standards by allowing the same clothing to worn by any and all as still professional. (e.g. a dress on a professional woman is still as professional on a man)
3. Don't require education for management. Instead, hire those who have the character desired and work to provide education necessary.
4. Equal pay. Period. The position pays what it pays. Women, men, black, white straight or trans. Make an effort to ensure that pay is equitable across the field.
Of course there are other things to adopt. But this is a quick start to diversifying your management and overall workforce using equality. It may be scary at first, but in the long run it will lead to other practises that are beneficial toward workplace diversity and equality.