On my schedule each company has an ID such as...
1010
1020
1030
1040
1040
1040
1050
1050
and each company is owned by another company for example
1010 owned 100% by A
1020 owned 100% by A
1030 owned 100% by A
1040 owned 33.33 by A
1040 owned 33.33 by B
1040 owned 33.34 by B
1050 owned...