The simplest is for one or more of the members to simply donate one million dollars to the IGGS Scholarship Fund.
( ( The simplest ) ( ( ( is ( for ( ( ( one or ) more ) ( of ( the members ) ) ) ) ) ( to ( simply ( ( donate ( ( one million ) dollars ) ) ( to ( the ( IGGS ( Scholarship Fund ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJS simplest)) (VP (VBZ is) (PP (IN for) (NP (NP (QP (CD one) (CC or) (JJR more))) (PP (IN of) (NP (DT the) (NNS members))))) (S (VP (TO to) (VP (ADVP (RB simply)) (VB donate) (NP (QP (CD one) (CD million)) (NNS dollars)) (PP (TO to) (NP (DT the) (NNP IGGS) (NNP Scholarship) (NNP Fund))))))) (. .)))
The simplest is for one million dollars to be donated by one of the members to the IGGS Scholarship Fund. 
( ( The simplest ) ( ( ( is ( for ( ( one million ) dollars ) ) ) ( to ( be ( ( donated ( by ( one ( of ( the members ) ) ) ) ) ( to ( the ( IGGS ( Scholarship Fund ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJS simplest)) (VP (VBZ is) (PP (IN for) (NP (QP (CD one) (CD million)) (NNS dollars))) (S (VP (TO to) (VP (VB be) (VP (VBN donated) (PP (IN by) (NP (NP (CD one)) (PP (IN of) (NP (DT the) (NNS members))))) (PP (TO to) (NP (DT the) (NNP IGGS) (NNP Scholarship) (NNP Fund)))))))) (. .)))