I am signing an executive order directing the department of housing and urban development...to make sure renters and homeowners can stay in their homes.

1）I'm signing 短暂动词用了进行时，这里是表将来按照计划的动作，相当于I'm going to sign...对吗？

2）directing 是现在分词短语作伴随状语，请问老师，是否也可看作：动名词短语directing...作为order的同位语呢？

3)  这里不能用to direct...原因是directing...就是order的内容，对吗？

4）renter, 词典上显示既是房东，又是租客，请问这是怎么回事呢？